The character Phantom Lady, created by Arthur Peddy, had originated in 1941 as a Quality Comics feature supplied by the Iger Studio. Cartoonist Frank Borth later took over the art. After Quality dropped the feature, which had appeared in Police Comics #1-23 (Aug. 1941 – Oct. 1943), Iger supplied it to Fox Comics, which had requested a sexy costumed adventuress.[citation needed] Baker redesigned the character into her best-known incarnation (see image above). This version (generally but unconfirmably credited to writer Ruth Roche) debuted in Fox's Phantom Lady #13 (August 1947), the premiere issue after taking over the numbering of the canceled comic Wotalife; the title ran through issue #23 (April 1949). Baker's Phantom Lady also appeared as a backup feature in All Top Comics #9-16 (Jan. 1948 – March 1949).[8]

His other artwork for comic books includes the light-humor military title Canteen Kate, for which Baker drew all 22 installments,[9] as well as stories in the suspense anthologyTales of The Mysterious Traveler; the comedic-adventure feature "Sky Girl" in Fiction House's Jumbo Comics, with originals and later reprints running from #69-139 (November 1944 - December 1952); the jungle adventure "Tiger Girl"; "Flamingo", "South Sea Girl", "Glory Forbes", "Kayo Kirby"; and "Risks Unlimited". Baker illustrated Lorna Doone for Classic Comics in December 1946, his one and only contribution to the well-known series.[10] He is the generally credited but unconfirmed artist for Fox's Rulah, Jungle Goddess #17–27 (Aug. 1948 - June 1949, the title's complete run after having taken over the numbering of the defunct Zoot Comics). He also produced Flamingo as a syndicated comic strip from 1952 through 1954.[citation needed] His pen names include Curt Davis.[11]

Later in the decade, Baker freelanced for Atlas Comics, the 1950s forerunner of Marvel Comics, beginning with a five-page anthological story generally if unconfirmably credited to writer-editor Stan Lee, in the omnibus title Gunsmoke Western #32 (Dec. 1955). At some point during this period, working through artist Vince Colletta's studio, Baker went on to draw stories for Atlas' Western Outlaws, Quick Trigger Action, Frontier Western, and Wild Western; more prolifically for the company's romance comicsLove Romances, My Own Romance, and Teen-Age Romance; and one story each for the supernatural/science fiction anthologies Strange Tales, World of Fantasy, and Tales to Astonish ("I Fell to the Center of the Earth!" in issue #2, March 1959). Baker also supplied artwork for the Dell Movie Classic edition of King Richard and the Crusaders.[12]

His last known work, as generally credited but unconfirmed, is the first page of the six-page story "Happily Ever After" in Atlas/Marvel's Love Romances #90 (Nov. 1960). His last known confirmed work is the six-page "I Gave Up the Man I Love!" in the company's My Own Romance #73 (Jan. 1960).[7]